Windows are the primary channel for natural lighting in offices during the day. They save the energy required for electric lighting and provide a visual connection to the outdoors. However, they also bring several challenges. In winter, especially in northern regions, windows allow valuable indoor heat to escape. In summer, they transfer external heat indoors, necessitating significant electrical energy (e.g., for air conditioning) to maintain a comfortable indoor temperature.

Although modern technology has introduced multi-pane glass, advanced window frame structures, and seam sealing techniques, windows remain the weak point in building insulation. Their thermal transmittance coefficient (U-value) rarely falls below 2 W/m²K, whereas a well-insulated exterior wall has a U-value of only about 0.5 W/m²K. This means heat loss through an insulated glass window is approximately seven times greater than through an exterior wall.

Sound Insulation Performance: Generally, people prefer a quiet office environment, especially for offices near streets or roads. Using closed roller shutters installed on the exterior of the glass window can significantly improve sound insulation. Research shows that greater distance between the roller shutter and the glass window enhances noise reduction. A closed roller shutter alone can reduce noise by 18 dB. When combined with an insulated glass window (e.g., 4/12/4 mm), an overall sound insulation of up to 37 dB can be achieved.

To achieve optimal sound insulation with roller shutters and doors, attention must be paid to the following:

Airtight sealing when the roller slats are closed.

Airtight sealing at the guide rails.

Airtight sealing between the bottom rail of the shutter and the windowsill.

Sufficient insulating properties of the roller shutter housing to avoid thermal bridging.

Sun Protection Performance: Unlike in winter, when sunlight through windows is desirable for warmth, the intense summer sun is often unwanted. During summer, only a small portion of sunlight is reflected by the glass, while most passes through into the interior, leading to the need for sun protection. While various shading methods exist, exterior roller shutters are one of the ideal solutions because:

They reflect most of the solar radiation.

They allow for stepless adjustment of sunlight entering the room.

Their operation requires virtually no additional space.

By reducing heat gain indoors, significant energy savings on air conditioning can be achieved. Choosing light-colored roller shutter profiles will further enhance solar reflection.

Resistance to Inclement Weather: Roller shutters for offices offer protection against wind, rain, snow, and sand, adding a protective barrier to the building's windows and doors.